Desktop Interface for Photographers Websites

I need a user interface to allow clients (photographers) to log in to their Joomla based website, add/edit/delete articles, add/edit/delete images and image categories (using phocagallery), add/edit/delete products and product categories using virtuemart. The virtuemart must be an optional module that can either be add on as a seperate installation or locked with a code. The solution must be fully PC and MAC compatible (as photographers work both systems. A successful project will lead to further similar work. Please show me examples of any similar user interface work you have done and include the phrase UI4PSD in your bid othewise you will not be considered.